Freezing machine



NOV. 7, 1939. r 'D F1 HERMAN ET AL 2,179,039

FREEZING MACHINE Filed Feb. 14, 1939 2 Sheets-Sheet 1 ATTOR NEYS Nov. 7, 1939- D. F. HERMAN lrsr A1.

FREEZING MACHINE Filed Feb. 14, 1939 2 Sheets-Sheet 2 ATTOR N EYS Patented Nov. 7, 1939 n UNITED STATI-:sA

PATE

.FREEZING Maoliirm` l Dock F. Herman and `Josef N ordenhaug,

Vinton, Va.

Applica-ien February i4, 1,939, serial No. 256,339 l 2 Claims. (C1. 259-49) the freezing apparatus being driven from the motor of the refrigerator or iceless machine and Without the necessity of the use of ice for freezing purposes.

Anotheroobj ect of the invention is the provision of an apparatus of this character, wherein on the` expansion in the process ofr the freezing of cream or confections therein the power for the operation of the apparatus will be automatically shut off or disconnected from such apparatus so that the same will become passive yet the fro-zen prod- O uct will be maintained in a frozencondition during storage within the iceless machine or refrigerator. Y

A further object of the invention is the provision of an apparatus of this character, wherein frozen products `may be prepared in a unique and convenient manner and such products Ain the freezing thereof being subjected to stirring action resulting in the perfect freezing, in the composition vand the flavoring of the frozen .10 product. l l

A `still further object of the invention is .the provision of an apparatus of this Icharacter, wherein the construction thereof is novel in its entirety and is adaptable for tting within a freezing unit within an icelessmachine or re-r frigerator and is automatically operated lfor freezing purposes in the freezing of cream or confections. l

A still further object of the invention isgthe o provision of an apparatus of p this character,

which is extremely simplekin its construction,

thoroughly reliable and eiiicient in operation,

constituting a built-in part of an icelessmachine or refrigerator, and inexpensive to manufacture and install. y

With these and other objects in View, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings, which disclose the preferred embodiment of the invention and pointed out in the claims hereunto appended.

In the accompanying drawings: Figure 1 is an elevation partly in section of an 5 iceless machine showing the apparatus conyiceless machine p drivenvconnections therewith in section.

structed in accordance with. the invention built therewith. j .y l'

Figure 2isl an enlarged vertical sectional View through the freezing unit and the apparatus associated therewith, aportion of this view-being 5 in elevation, being preferably a section on the line 2-2 of Figure 3. y f

Figure 3 isa fragmentary horizontal sectional view taken through Figure 2.

Figure 4 is an elevation of themotor of the 10 or.4 refrigerator lshowing the Figure 5 isanenlarged sectional viewtaken on the line 5 5 of Figure l looking in the direction of the arrows. f

Figure Gis a sectional view takenvonthe line 6 6 of Figure 1 looking in the direction of the arrows.

Figure 7 is a fragmentary perspective View of a portion of the apparatus.'

kSimilar reference vcharacters indicate .correspending parts throughout the several views in the drawings. Y

Referring to the drawings in detail, A designates generally an iceless machine or refrigerator having within a cooling compartment il accessi,- ble from the front of the machine or refrigerator, a door II being provided for this purpose. In this compartment I@ is stored food stuff to be maintained fresh under refrigeration in the usual well-known manner. Built within the Lcompartment Iii isa freezing unit I2, being composed of the usualv evaporating and expansion type as employed inA ice4 machines orV refrigeratorsl and this unit creates Within the v same a space- I3 for freezing purposes. -Within this space I3 is accommodated the freezing apparatus constituting the present invention and hereinafter fully described. j f `The freezing apparatus in this instance comprises a pair of spaced `perpendiculariy disposed containers I4 adapted to hold cream or confections to vbefrozen. Each container 'I4 is open at its uppermost portion through which isintroduced the substance tol be frozen. The open uppermost portion of the container I4 has telescopically and slidably tted thereon` a cover or head I5, being formed exteriorly peripherally thereof with gear teeth I6 for meshing engagement with companion gear teeth I'I of the cover or head I5 of the other container of the pair so that motion is transferred from one container to the other for the rotation thereof in unison.

The containers I4 have within the same agitators or paddles I8, their center stems I9 at the 55 yio lowermost ends being socketed at 2U while the .upper ends are squared at 2l and are accommodated within correspondingly shaped openings formed in releasing straps 22 of supporting frames 23 for the containers, the latter being journaled at 2d in the bases of said frames 23 for rotation therein. v

Joined with each frame 23 and loosely accommodating the container III companion thereto is a pair of vertically spaced holding plates 25, these being horizontally disposed in parallel relation to each other and are tted with snap fasteners 26 for engagement with brackets 21 interiorly of the space I3 and a part of the freezing unit I2. The plates 25 prevent displacement of the frames when fitted within the space I3 in the unit I2 and these frames 23 with the said plates, when the latter carry the containers Id, are separated by a central partition 28 built within the space I3.

Each cover or head I5 is telescopically keyed at 29 with its companion container I4 so that the cover or head is free for sliding movement yet is rotatably locked with the container.

Within each container and floatable on the contents thereof is a lifter disk 3i) being loose about the stem I9 of the agitator IB and is provided with lifter risers 3l for contact with the cover or head I5 next thereto. Now the purpose f these lifter disks 3i? will be hereinafter fully described.

Within the iceless machine or refrigerator A is the power motor 32 which has its driving shaft 33 geared at 34 with a flexible driven shaft 35 eX- tending to the freezing unit I2 and through a spring-held displaceable gear 3S has driven connection with the gear teeth IE? on the cover or head I next to this connection 36. Thus the containers lli are rotatably driven by transfer of power from the motor 32 through the shaft 35 for the freezing operation of the apparatus. Now when expansion of the frozen product within the container III having its cover or head I5 in direct driven connection with the gear 33 occurs, the lifter disk 30 rises therein lifting the said cover or head out of meshing engagement with the gear 35 and in this manner bringing both containers I4 to a standstill.

On the expansion of the product within the other container remote from, the connection 36, the lifter disk 30 raises its cover or head I5 and in this manner this particular container will come to a standstill.

The freezing unit I2, on the operation of the iceless machine or refrigerator, effects the freezing of the contents of the containers Ill while the agitators i8 stir the contents of said containers during the operation of the apparatus.

'The gear connection 35 of the type shown permits of the easy introduction of the containers I4 with the frames 23 and plates 25 into the space I3 in the unit I2 and the meshing engagement of the connections 33 with the cover or head next thereto. This is equally true on the removal of the containers II from the space I3 in the unit I2.

It is preferable to have the flexible shaft 35 nless type.

The gear connection 36 of the spring-held type does not interfere with the introduction and removal of the freezing apparatus into and from the freezing unit I2 for the reasons before explained.

The releasing straps 22 of the frames 23 permit convenient removal of the'covers or heads I5 from the containers I4 and also lthe removal of the latter from the said frames as well as the extractingor removalof the agitators I8 from the containers.

The gear teeth I'I on the covers or heads create gears for intermeshing engagement with each other in the set up of the pair of containers I4, these covers or headsv being slidably keyed with the said containers so that said covers or heads can rise under the action of the lifter disks 30, hereinbefore described.

What is claimed is:

1. A freezing apparatus for food products adapted for insertion in the freezing compartment of a domestic refrigerator comprising a r,vertically disposed container, an agitator fitting said container, a carrying frame about said container and having means holding the same rigid within the freezing compartment, a cover fitting said container and displaceably connected therewith and effective for the rotation of said container, means on the frame for holding the agitator fixed, means connected with the cover for imparting rotation thereto, means for separably fastening the holding means within the compartment, and a fioater within the container and automatically lifted on the expansion of the products within said container for disconnecting the driving connection of the cover with the secondnamed means. l

2. A freezing apparatus for a domestic refrigerator having a freezing compartment, comprising a plurality of vertically disposed containers arranged side by side within said freezing compartment, agitators fitting said containers, a frame about each container and rigidly held within the freezing compartment, a cover fitting each container and displaceably connected therewith, gear connections between said covers, means on the frame for holding each agitator fixed, and a oater within each container and automatically lifted on expansion of the products therein for disconnecting the gear connections between said covers, and means associated with one of the covers for imparting rotation thereto.

DOCK F. HERMAN.

JOSEF NORDENHAG. 

